Tube and pipe testing machine



Oct. 19 1926. 1,604,012

J. C. BAREISS TUBE AND PIPE TESTING MACHINE Filed June 24, 1924 WITNESSES INVENTOR A TTORNE Y8 arm associated Patented Uct. 19, 1926.

ll E til E S JOHN CI-IAQLES BAREISS, PHILADELPHIA, PENNSYLVANIA.

TUBE AND PIPE 'IESTING MACHINE.

Application filed June at,

tlietube in position a balanced cii'anhii'sp; de-

viceis ei'nployed incltuling: a weight ed crank vithonc oi: the tube holders and "functioning to more. said holder longitudinaily to retain the tube in position between said holders and actuate the latter holder to coutrol thle admission of the fluid under pressure into the tube.

According to thepresent invention the retention ot'the tube in position between the holders while a test is being twin, is con'iplished by the utilization oi the tluic. pressure which is admitted to the tube.

The inventiveidea involved is capable of receiving a variety of mechanical expressions one of which, for the purpose of illustrating the invention, is shown in the accompanying drawings; but it is to be expressly understood that said drawing is utilized merely for the purpose of facilitating the description of the invention as a whole andnot to deline the limits thereof, reference being had to the appended claims for this purpose.

in the drawing Figure 1 is a fragmentary side elevation oi the machine constructed in accordance with the invention;

ll igure 2 is a vertical longitudinal section through one of the tube holders and its as sociated parts;

l1 igure 3 is a transverse section on the line 3 Set Figure 2: and

Figure 4: is a. detail perspective view of a bushing employed in connection with the holder shown in Figure 2.

The invention is shown in its preferred form as consisting of a base 5 of any suitable length above which are supported the casings 6 and 7 adjustable longitudinally of the base to vary the distance between said casings so as to accommodate tubes 0;"? different lengths. Any suitable means may be provided for accomplisl'iine; the adjut. ments of the casings 6 and '7 and in the drawing this means is shown as consisting 1924. Serial No. "522,151.

ola phirality of bolts 8 extending through thcsupports 9 ot the casn s and lowing to their heads engaged in the grooveilti formed in the base'o.

lfiach ot the casingstiand 7 contains (litlcrent instruincntalities by means of wh ch a tube to be tested is mounted intesting position and retained in such position during the test. The construction within the casing 6is precisely the same as that disclosed 111 the right hand casing; illustrated in the above-mentioned patent; and r rent-c is made to said patent for a dcla urulerstamling of this construction. Brietly, the outer end of the casing has connected thereto a mire-controlled inlet pipe ll "tor achnitting tluid under pressure into the casing 'trcm the. main feed line lluid employed be air steam or to in;

other fluid, and in order cann structicn nlay be connected to tlteline 1:3; ritthe inner end of the casing; ti the same has mounted therein a tube or pipe holder 14- providing a mounting for tubes of difterenttornrs, such as disclosed in said patent. lhe holder l t is movable longitudii'ially in the casing; (3 tor the purpose of controlling the" admission of fluid under pressure into the tube 15 to be tested,- as fully disclosed in said patent.

The casin 7 is arran 'edon' the base in direct axial alignment with the casing 6 and receives therein the tube holder 16, one end of which has secured thereto a recessed head 17 for receiving the adjacent end of the tube 15 to be tested. The holder 16 is provided centrally thereof with a longitudinally extending passage 18 preferably arranged in direct alignment with the tube 15 to be tested so that the fluid under pressure will pass through the tube and into said passage. Thoend ot the holder 16 remote from the head 17 is reduced to provide a screw threaded extension 19 upon which is mounted a bushing 20 substantially cylindrical in formation and provided adjacent one end with an annular flange 21 adapted to engage the adjacent end of the casing 7, as shown in Figure 2 to limit the movement of the holder 16 in the direction of the casing; 6. The in nor end 252 of the bushing is reduced and is utilized to retain in position a gasket or packing ring; 23 interposed between the bushing and the adjacent enlarged portion of the Her the preferably water, but may ate the pressure of the fluid entering; ,a a gaugeli'loii' any suitableron holder 16 so as to prevent the escape of the fluid around the holder. The flange 21 is provided at intervals with openings 24 therethrough which communicate with longitudinal grooves 25 formed in the outer periphery of the bushing so as to permit of the flow of fluid under pressure around the bushing and against the gasket 23, so as to force the packing firmly against the casing and at the same time exerting a pressure on the holder 16 which will aid in forcing the same in the direction of the casing 6 to retain the tube 15 in testing position after the same has been mounted between the holders l4 and 16. In order to confine the fluid so that the pressure thereof against the holder 16 will be maintained the end of the casing 7 adjacent the bushing 20 is externally screw threaded to receive thereon a member in the form of a nut 26, the closed end of which is spaced from the bushing to provide a pressure chamber 27 in which the fluid passing through the passage 18 accumulates after the valve 28 of the outlet pipe 29 communicatingwith said chamber is closed.

1 eans are provided for moving the holder 16 longitudinally in the casing 7 when -mounting and demounting the tube 15. This means 1S substantiallythe same as that disclosed in the above-mentioned patent and briefly consists 111 providlng the holder 16 intermediate its ends with an annular groove 7 30. As in the above patent suitable bearings 31 are formed onopposite sides of the holder 16 and extend into arcuate slots 32 in the lower bifurcated ends 33 of the crank arm 34. This crank arm is pivoted to the casing 7 at 35 and may be rocked back and forth about said pivot to produce longitudinal movements of the holder 16 in the casing 7. In operation, the ends of the tube to be tested are first mounted in the adjacent ends 7 of the holders 14: and 16 and the crank arm transmitted to the holder 14 and this latter holder being also movable longitudinally in its casing will operate to effect the admission of fluid under pressure from the main line 12 into the casing 6'and from thence through i the tube 15 and into the chamber 27 through the passage 18, it being understood that at this time the outlet valve 28 has been closed. After the desired pressure has been attained an inspection of the tube may be made and in doing so the holders l4: and 16 may be r0- tated, as described in said patent, to enable the entire surface of the tube to be examined. As previously described the accumulation of the fluid in the chamber 27 creates a pressure which acts against the adjacent end of the holder 16 and the packing to force the same against the end of the tube 15 mounted in said holder and thereby effectively retains the tube 15 in its testing position. After the tube has been tested the valve 28 is opened to relieve the pressure in the chamber '27, whereupon the crank 34 may be moved about its pivot to a reverse position from that disclosed in the drawing to accomplish the withdrawal of the holder 16 from the adjacent end of-the tube 15 whereupon said tube may be removed from the machine. Upon relieving the pressure of the tube 15' against the holder 14 in the casing 6 the mechanism in said casing is automatically controlled, as described in said patent, to shut off the fluid entering the casing 6 through the pipe 11.

What is claimed is:

1. In a tube testing machine, a casing having a chamber at one end, a longitudinally movable tubeholder in the casing and havinga longitudinal passage and a reduced end, a bushing on, the reduced end of the holder and provided with peripheral passages and with a stop for engaging one end of the casing to limit the movement of the holder in the casing, and a packing between the bushing, holder and easing, means for holding the bushing on the movable tube holder.

2. In a tube testing machine, a casing having a cap on one end forming therewith a chamber, a longitudinally movable tube holder in the casing and having a longitudinal passage and reduced end, a bushing on the reduced end of the holder, and provided with a flange adapted to engagethe end of the casing to limit the movement of the holder, means for holding the bushing 0n the movable tube holder, the bushing also provided with longitudinal passages and its flange with openings registering with said passages, and a packing between the bushing, holder and easing.

JOHN oHARLEs BAREISS. 

